RESUMONeste trabalho analisou-se a estrutura dos sistemas meteorológicos associados às precipitações intensas em Alagoas entre 2003 e 2006. Foi feita a análise das imagens de satélite no canal infravermelho, de produtos de reanálise do National Centers for Environmental Prediction (NCEP) e dados de precipitação de dezessete postos pluviométricos, espalhados em diferentes regiões do Estado. O objetivo desse estudo foi analisar as causas da formação das precipitações intensas e determinar os sistemas meteorológicos associados. Os casos de precipitação intensa foram registrados no Outono/ Inverno. Além disso, metade dos eventos ocorridos entre a primavera e o verão aconteceu em janeiro. As Perturbações Ondulatórias nos Ventos Alísios, a Corrente de Jato do Nordeste Brasileiro e as extremidades das frentes frias foram os sistemas que estiveram mais relacionados às precipitações intensas. Complexos Convectivos de Mesoescala provocaram boa parte dos temporais no oeste do Estado, o que não foi verificado no leste. Exemplificando o método de análise utilizado, um caso foi discutido. Palavras-chaves: Sistemas Sinóticos, Precipitações Intensas, Alagoas.
ABSTRACT: SYNOPTIC SYSTEMS ASSOCIATED TO HEAVY PRECIPITATION IN THE STATE OF ALAGOASStructures of meteorological systems, associated with heavy precipitation in the Alagoas State, for the 2003-2006 period were studied. Infrared satellite images, reanalysis data products of the National Centers for Environmental Prediction (NCEP) and data from seventeen Alagoas pluviometric stations were used. The goal of this study is the analysis of the heavy precipitation causes and determination of the associated weather systems. Heavy precipitations were usually registered during autumn/ winter seasons. Also, half of all spring/summer heavy precipitations events occurred in January. Wave Disturbances in the Trade Winds, Brazilian Northeast Jet Streams and Cold Front Extremities were associated with heavy precipitations. Almost all heavy precipitations events were connected with Mesoscale Convective Complexes in the west region of the State and usually did not occur in the east region. To exemplify the used analysis method a case study is discussed.
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One-hundred cases of olivopontocerebellar atrophy, type 1, were found and studied in the Iakut population of Eastern Siberia. The disease followed a slowly progressive course of cerebellar insufficiency caused by degeneration in the cerebellar cortex, nuclei pontis, and inferior oliva. The disorder shows an autosomal dominant pattern of inheritance with a lower penetrance in females. The disease spread from a small region in the Aldan valley 200 to 300 years ago.
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